Call us: 651-448-8188
email: sales@polytechinnovations.com
35283 340th Street, Lake City, MN 55041
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Welcome to Bluff Valley Battery
We are a manufacture and rebuilder of power tool batteries for such brands as  DeWalt, Milwaukee, Lincoln, Alemite, Snap-On, Bosch, Porter-Cable plus many more.  We manufacture kits for select models (saves in shipping cost) in addition to rebuilding all NiCd and NiMh power tool batteries at our facility.  We aim to offer the best in power tool battery rebuilding and rebuild kits.  We take pride in our selection of quality products and all of the products we offer in our on-line catalog are made from trusted 1.2 Volt NiCd or NiMh cells. The kits are made per order so they are fresh and haven't been sitting on the shelf for months. We offer a 1 year warranty on all our products. Bluff Valley Battery can deliver on most occasions to you within 3-4 business days. I also offer for sale the individual battery cells for the NiCd, NiMh, and Lithium ion. If you have any questions regarding our products or would like more information, please contact us at 651-448-8188 or email us at sales@bluffvalleybattery.com
For more information please:
Contact Us
Power Tool Battery Rebuild Kits
Rebuild Your Own Power Tool Battery Packs For Half The Cost Plus Free Shipping!
Battery Repair
Individual Battery Cells
Bluff Valley Battery also rebuilds all Ni-Cd and Ni-Mh batteries that we do not have kits for.  Click here to see a list of batteries and prices.  Just send your batteries to our facility for a quality rebuild and quick turn around.
Bluff Valley Battery sells individual cells for Ni-Cd, Ni-Mh, and Lithium batteries. Click here for a list of prices.
So why waste your money on a whole new battery and case when you can get a quality battery that performs the same or better than your current battery.  These kit are available on select models and can be upgraded to the 3.0 amp hour NiMh battery cells. (See somparison below)
NiCd versus NiMh
Nickel metal hydride (NiMH) advantages:                                    Nickel cadmium (NiCad) advantages:
**  lighter than NiCad                                                                             **  Longer Life Cycles
**  2-3X capacity to equal size NiCad                                                 **  Performs in cold tempertures (good performance down to 20 F)
                                                                                                                 **  Lower self-discharge level than NiMh
                                                                                                                 **  No voltage drop at/near discharge level
​                                                                                                                 **  Less expensive

Nickel metal hydride (NiMH) disadvantages:                            Nickle Cadmium (NiCad) disadvantages:
**   fewer life cycles compared to NiCad                                           **  Heavy
**   shorter run time                                                                               **  May suffer from "Memory Effect" if constantly discharged half-way and then recharged
**   performs the worst in cold temperatures
**   higher self-discharge level than NiCad
**   voltage drop at near-discharged levels
**   More expensive

We have now added NiMh Sub C battery cells to our line of battery rebuild kits and battery repair.  We offer them in 2600 mAh, 3000 mAh, and 3400 mAh.  We also upgraded our 4/5 NiMh Sub C cell to 2100 mAh.
​We offer a 12 month warranty on all our battery packs and rebuilds.
ATTENTION DC9099 / DC9098 / DW9098/ DW 9094 / DW9092 / DW9072 Battery Pack Users

We have upgraded our standard cell from a 1300 mAh NiCd cell to a 2100 mAh NiMh Cell - This will cut you cost per mAh from 3.2 cents to 2.2 cents per mAh and give you more power and long run times to boot!
Warranty